scholarly journals EVALUATION OF ENERGY AND ECONOMIC EFFICIENCY OF MICROALGAE CULTIVATION FOR BIOFUEL PRODUCTION IN UKRAINE

2018 ◽  
pp. 52-60
Author(s):  
Shamanskyi S. ◽  
Keyword(s):  
Economic Efficiency ◽  
Biofuel Production ◽  
Microalgae Cultivation

scholarly journals Improving the economic efficiency of production biodieselfuel

2019 ◽  
pp. 43-50
Author(s):  
М. Senchuk ◽  
L. Gutko
Keyword(s):  
Economic Efficiency ◽  
Raw Materials ◽  
Direct Costs ◽  
Production Optimization ◽  
Biodiesel Production ◽  
Biofuel Production ◽  
Design Stage ◽  
Biodiesel Fuel ◽  
Optimum Distance ◽  
The Cost

In order to optimize the performance of transportation works for the transportation of raw materials for the production of biodiesel fuel, the article examines the technology when oil from oilseeds is obtained at the processing points where they are grown. The resulting oil is transported to a biodiesel production plant. The methodological bases for calculating the optimum distance from oilseed grain storage sites to a mechanized oil production point are presented. Possible ways of the efficiency improving of production of biofuel at the stage of the planning are presented. Methodical bases of calculation of distance to mechanized points for biofuel production are given. A formula for determining the optimum capacity of an item for the processing of oil seeds and for obtaining raw materials for the production of biofuels has been derived. It is established that optimum transportation distance of rape is 14,4 km, productivity of the rapeseed oil processing plant is 21280 tons/year and for 25% of the oil yield 5320 tons of biofuel raw materials can be obtained, when the total overhead costs are Zv = 360000 UAH / year; specific costs of transportation of raw materials сp = 2,6 UAH/ (тkm); yield of oilseed rape = 1 t / ha (100 t / km2); the density of the placement of fields a = 0.4. The developed method can be used to calculate the location, performance of points for the manufacture of briquettes or pellets. The direction of increasing the efficiency of biodiesel production at plants at the stage of their planning is to determine the optimal annual productivity of the plant, taking into account transport costs for the transportation of raw materials - oil. The optimum distance of transportation of oil and productivity of the plant for biodiesel production is established for the cost of transportation - 2.6 UAH / t • km, overhead costs 13000000 UAH, direct costs for the production of 1 ton of biodiesel fuel - 25000 UAH Therefore, the optimal distance of transportation of oil for the production of biofuels - 101 km, the capacity of the plant - 58923 tons. The dependence of the cost of production of biodiesel fuel on the distance of transportation of oil is calculated: for distance to plant 40 km – the cost of biofuel production – 25596 UAH/t, for 60 km – 25496 UAH /t, for 80 km – 25462 UAH /t, for 100 km – 25459 UAH /t, for 120 km – 25471 UAH /t, for 140 km – 25493 UAH /t. The proposed method provides an opportunity to determine the optimum productivity of the plant for the processing of organic raw materials into biofuels, taking into account the distance of its transportation at the design stage. Key words: biodiesel, economic efficiency, production optimization, direct costs, overhead costs.

Prospect Analysis of the Coupling System of Low-Quality Biomass Treatment and Microalgae Biofuel Production

2011 ◽  
Vol 137 ◽  
pp. 269-274
Author(s):  
Xiao Dan Wu ◽  
Yu Huan Liu ◽  
Rong Sheng Ruan ◽  
Yi Qin Wan ◽  
Jin Sheng Zhang ◽  
...  
Keyword(s):  
Hot Spots ◽  
Animal Feed ◽  
Organic Fertilizer ◽  
Value Added ◽  
Calorific Value ◽  
Biofuel Production ◽  
Human Beings ◽  
Microalgae Cultivation ◽  
Coupling System ◽  
New Energy

Nowadays human beings face the crisis and challenge of environmental pollution and energy shortage. The green treatment of low-quality biomass (such as wastewater, waste gas and solid waste), and development of microalgae biofuel are hot spots of pollution treatment and new energy development respectively. Base on the coupling system of microalgae cultivation by slurry (the product of anaerobic digestion of low-quality biomass) and biofuel production by microalgae, it is most likely to achieve an organic integration of the two hot spots, obtaining alternative liquid fuel and realizing slurry purification finally. In addition, there are added benefits can be obtained from the system, such as some high value-added products, animal feed, organic fertilizer, high-absorption materials, and so on. In this paper, combining the latest research advances of our research group, we made a brief analysis of the feasibility of microalgae cultivation by slurry, the characteristics of microalgae cultivation and lipid accumulation, the refining technologies of high calorific value fuel from microalgae, etc., and prospected the coupling system of low-quality biomass treatment and microalgae biofuel production.

scholarly journals A Review on Synchronous Microalgal Lipid Enhancement and Wastewater Treatment

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7687
Author(s):  
Visva Bharati Barua ◽  
Mariya Munir
Keyword(s):  
Wastewater Treatment ◽  
Efficient Solution ◽  
Culture Media ◽  
Lipid Production ◽  
Cost Effective ◽  
Biofuel Production ◽  
Microalgae Cultivation ◽  
Photosynthetic Eukaryotes ◽  
Biomass Enhancement ◽  
Microalgae Biomass

Microalgae are unicellular photosynthetic eukaryotes that can treat wastewater and provide us with biofuel. Microalgae cultivation utilizing wastewater is a promising approach for synchronous wastewater treatment and biofuel production. However, previous studies suggest that high microalgae biomass production reduces lipid production and vice versa. For cost-effective biofuel production from microalgae, synchronous lipid and biomass enhancement utilizing wastewater is necessary. Therefore, this study brings forth a comprehensive review of synchronous microalgal lipid and biomass enhancement strategies for biofuel production and wastewater treatment. The review emphasizes the appropriate synergy of the microalgae species, culture media, and synchronous lipid and biomass enhancement conditions as a sustainable, efficient solution.

scholarly journals Potential of Microalgae Cultivation in Dairy Wastewater as a Step in Low-Cost Biofuel Production

2018 ◽  
Vol 24 (4) ◽  
pp. 58
Author(s):  
Basma Abbas Abdulmajeed ◽  
Arwa Raad Ibrahim
Keyword(s):  
Wastewater Treatment ◽  
Renewable Energy ◽  
Chemical Oxygen Demand ◽  
Low Cost ◽  
Oxygen Demand ◽  
Dairy Wastewater ◽  
Biofuel Production ◽  
Microalgae Cultivation ◽  
Chlorella Sp

The present study addresses adopting the organic and nutritious materials in dairy wastewater as media for cultivation of microalgae, which represent an important source of renewable energy. This study was carried out through cultivation of three types of microalgae; Chlorella sp., Synechococcus, and Anabaena. The results shows the success the cultivation of the Synechococcus and  Chlorella Sp, while the Anabaena microalgae were in low-growth level. The highest growth was in the Synechococcus farm, followed by Chlorella and Anabaena. However, the growth of Synechococcus required 10 days to achieve this increase that represents a negative indicator of the adoption of this type of microalgae in this media to meet the desired aims. While Chlorella needs less than two days to start growing. Moreover, the data obtained from the experiment show that removal of chemical oxygen demand in Chlorella cultures was (72%) more than that obtained from cultivation of other microalgae. Thus this microalgae is more efficient in wastewater treatment than other types.  

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